U.S. patent application number 12/222393 was filed with the patent office on 2009-12-17 for electrical connector and inserting method thereof.
Invention is credited to Yu Sheng Chen.
Application Number | 20090311895 12/222393 |
Document ID | / |
Family ID | 41417472 |
Filed Date | 2009-12-17 |
United States Patent
Application |
20090311895 |
Kind Code |
A1 |
Chen; Yu Sheng |
December 17, 2009 |
ELECTRICAL CONNECTOR AND INSERTING METHOD THEREOF
Abstract
An electrical connector includes an insulating body with a main
body portion in which a first receiving space is concavely formed.
Spaced first terminal passages extend in a top surface of the first
receiving space. A second receiving space is formed in the front
end of the main body portion and connected with the first receiving
space. A tongue plate extends forwards from a front end face of the
main body portion and has a working surface in which spaced second
terminal passages extend. The second receiving space is located
above the tongue plate. First and second conductive terminals are
respectively correspondingly received in the first and the second
terminal passages. When a memory card is inserted into the
connector, there is no other in-series disturbed signal noise for
stable signal transmission; and when the memory card is inserted to
its position, it cannot swing and can be connected stably.
Inventors: |
Chen; Yu Sheng; (Keetung
City, TW) |
Correspondence
Address: |
ROSENBERG, KLEIN & LEE
3458 ELLICOTT CENTER DRIVE-SUITE 101
ELLICOTT CITY
MD
21043
US
|
Family ID: |
41417472 |
Appl. No.: |
12/222393 |
Filed: |
August 8, 2008 |
Current U.S.
Class: |
439/218 |
Current CPC
Class: |
H01R 12/725 20130101;
H01R 12/721 20130101 |
Class at
Publication: |
439/218 |
International
Class: |
H01R 27/00 20060101
H01R027/00 |
Foreign Application Data
Date |
Code |
Application Number |
Jun 11, 2008 |
CN |
200810124912.4 |
Claims
1. An electrical connector, comprising: an insulating body, having
a main body portion, wherein a first receiving space is concavely
formed in the main body portion and extends from a front end of the
main body to a rear end of the main body and the main body portion
has a plurality of spaced first terminal passages extending in a
top surface of the first receiving space; a second receiving space
is formed in the front end of the main body portion and connected
with the first receiving space; and a tongue plate extends forwards
from a front end face of the main body portion, the second
receiving space is located above the tongue plate, and the tongue
plate has a working surface on which a plurality of spaced second
terminal passages extends; a plurality of first conductive
terminals, respectively correspondingly received in the first
terminal passages; and a plurality of second conductive terminals,
respectively correspondingly received in the second terminal
passages.
2. The electrical connector as claimed in claim 1, further
comprising a shielding casing outside the insulating body, the
shielding casing surrounding the tongue plate and the second
receiving space and having a top plate, wherein the second
receiving space is defined by the top plate and the tongue
plate.
3. The electrical connector as claimed in claim 1, wherein the
working surface of the tongue plate is located on a surface of the
tongue plate which is adjacent to the second receiving space.
4. The electrical connector as claimed in claim 1, wherein the
working surface of the tongue plate is located on a surface of the
tongue plate which is far away from the second receiving space.
5. The electrical connector as claimed in claim 1, wherein at least
one side of the first receiving space has a fool-proof unit formed
thereon.
6. The electrical connector as claimed in claim 1, wherein each of
the first terminal passages is disposed corresponding to one of the
second terminal passages.
7. An electrical connector, comprising: a socket connector having a
main body portion, an inserting space concavely formed in the main
body portion and extending from a front end of the main body to a
rear end of the main body, and the main body portion having a
plurality of spaced first conductive terminals extending on a top
surface of the inserting space; and a plug connector extending from
the socket connector, the plug connector having a tongue plate
extending forwards from a front end of a bottom of the main body
portion of the socket connector, a plurality of spaced second
conductive terminals extending on a surface of the tongue plate;
wherein when an plug assembly is connected, the plug assembly goes
over the tongue plate of the plug connector and is just inserted in
the inserting space of the socket connector; and when a socket
assembly is connected, the socket assembly just covers the tongue
plate of the plug connector and is blocked outside the socket
connector.
8. The electrical connector as claimed in claim 7, wherein the plug
connector further includes a shielding casing surrounding the
tongue plate.
9. The electrical connector as claimed in claim 8, wherein the
shielding casing of the plug connector and the tongue plate define
a butting space together, which is connected with the inserting
space of the socket connector.
10. The electrical connector as claimed in claim 7, wherein the
main body portion has a fool-proof unit formed on at least one side
of the inserting space.
11. The electrical connector as claimed in claim 7, wherein the
main body portion has a plurality of spaced first terminal passages
formed in a top surface of the inserting space, and the plurality
of first conductive terminals are respectively correspondingly
received in the first terminal passages.
12. The electrical connector as claimed in claim 11, wherein a
plurality of spaced second terminal passages is formed in an upper
surface of the tongue plate, and each of the first terminal
passages is disposed corresponding to each second terminal
passage.
13. The electrical connector as claimed in claim 7, wherein a
plurality of spaced second terminal passages is formed in an upper
surface of the tongue plate, and the plurality of second conductive
terminals are respectively correspondingly received in the second
terminal passages.
14. An electrical connector, comprising: a main body portion,
having a receiving space concavely formed in a front end thereof, a
protrusion extending forwards from the front end thereof and a
cutout concavely formed in a bottom thereof, wherein the protrusion
has a guiding surface formed on a top thereof and connected with a
bottom surface of the receiving space, and the cutout is connected
with the receiving space; a plurality of spaced first conductive
terminals disposed on a top surface of the receiving space and each
having a first connecting portion which is formed by extending each
first conductive terminal rearwards through a rear end of the main
body portion and then bending the first conductive terminal
downwards; and a plurality of spaced second conductive terminals
disposed on the guiding surface of the protrusion and each having a
second connecting portion which is formed by bending and extending
the second conductive terminal downward when the second conductive
terminal is extended to the cutout.
15. The electrical connector as claimed in claim 14, wherein the
second connecting portion extends downwards vertically in the
cutout.
16. The electrical connector as claimed in claim 14, wherein the
main body portion has a mounting surface formed adjacent to the
cutout.
17. The electrical connector as claimed in claim 14, wherein the
main body portion has a fool-proof unit formed on at least one side
of the receiving space.
18. The electrical connector as claimed in claim 14, wherein the
main body portion has a plurality of spaced first terminal passages
formed in a top surface of the receiving space, and the plurality
of first conductive terminals are respectively correspondingly
received in the first terminal passages.
19. The electrical connector as claimed in claim 18, wherein a
plurality of spaced second terminal passages is formed in the
guiding surface of the protrusion, and each of the first terminal
passages is disposed corresponding to each second terminal
passage.
20. The electrical connector as claimed in claim 14, wherein a
plurality of spaced second terminal passages is formed in the
guiding surface of the protrusion, and the plurality of second
conductive terminals are respectively correspondingly received in
the second terminal passages.
21. The electrical connector as claimed in claim 14, further
comprising a shielding casing surrounding the protrusion to form a
butting portion.
22. A method of inserting an electrical connector comprising the
steps of: (1). providing an electrical connector which includes: a
main body portion, having a receiving space which is concavely
formed in the main body portion and extends from a front end face
of the main body to a rear end face of the main body, and a tongue
plate extending forwards from a front end of a bottom of the main
body portion; a plurality of spaced first conductive terminals
disposed on a top surface of the receiving space; and a plurality
of spaced second conductive terminals disposed on an upper surface
of the tongue plate; (2). providing a memory card which has a first
insulating surface and a second insulating surface opposite to the
first insulating surface, the first insulating surface having a
plurality of spaced contacting points; (3). disposing the memory
card in front of the electrical connector correspondingly, the
first insulating surface facing up and the opposite second
insulating surface facing down; and (4). pushing the memory card so
that the memory card goes over the tongue plate of the electrical
connector and enters the receiving space, each of the contacting
points of the first insulating surface is just correspondingly
electrically connected with one of the first conductive terminals,
and the second insulating surface contacts with the second
conductive terminals.
23. The method of inserting an electrical connector as claimed in
claim 22, wherein the main body portion has a plurality of spaced
first terminal passages extending in a top surface of the receiving
space, and the plurality of first conductive terminals are
respectively correspondingly received in the first terminal
passages.
24. The method of inserting an electrical connector as claimed in
claim 23, wherein a plurality of spaced second terminal passages
extends in an upper surface of the tongue plate, and each of the
first terminal passages is disposed corresponding to each second
terminal passage.
25. The method of inserting an electrical connector as claimed in
claim 22, wherein a plurality of spaced second terminal passages
extends in an upper surface of the tongue plate, and the plurality
of second conductive terminals are respectively correspondingly
received in the second terminal passages.
26. The method of inserting an electrical connector as claimed in
claim 22, further comprising disposing a shielding casing which
surrounds the tongue plate so that a containing space is formed
above the tongue plate and connected with the receiving space
backward.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates to an electrical connector,
and more especially to an electrical connector which can be not
only connected with a socket assembly (for example, a standard USB
socket connector), but also securely connected with a plug assembly
(for example, a memory card), and method of inserting the
electrical connector.
[0003] 2. Description of Related Art
[0004] Universal Serial Bus (USB) is an electrical connector which
can transmit high-speed signals. At present, USB is widely used to
connect all kinds of electronic hosts and external devices. With
the popularity of USB connectors, various electrical connectors are
designed to have expansion functions and simultaneously transmit
standard USB interface electrical signals and other additional
electrical signals (for example, memory card electrical signals)
based on original USB standard.
[0005] A standard USB connector 100 (please refer to FIG. 1 and
FIG. 2) generally includes an insulating body 110. The insulating
body 110 has a base portion 111 which extends forwards to form a
tongue plate 112. A plurality of terminal passages 113 extend
through the base portion 111 along a butting direction to a surface
of the tongue plate 112. A plurality of conductive terminals 120 is
respectively correspondingly disposed in the terminal passages 113.
Each conductive terminal 120 has a contacting portion 123, a tail
portion 122 and a fixing portion 121 connecting the contacting
portion 123 with the tail portion 122.
[0006] A conventional memory card 4 (please refer to FIG. 3), such
as Micard, generally has an inserting end (front end) 41 and an
opposite end (rear end) 42, a first insulating surface (front face)
43 and a second insulating surface (back face) 44. The first
insulating surface 43 has a first interface 45 near the inserting
end 41, and the first interface 45 may be a USB interface and have
a plurality of first contacting points 450 arranged in rows.
Furthermore, the first insulating surface 43 may also have a second
interface 46 adjacent to the first interface 45, and the second
interface 46 has a plurality of second contacting points 460
arranged in rows. The first insulating surface 43 may further have
a third interface 47 near the opposite end 42, and the third
interface 47 has a plurality of third contacting points 470
arranged in rows. Of course, the first insulating surface 43 may
also have other types of interfaces formed thereon. Generally,
there is no interface on the second insulating surface 44. The
second insulating surface 44 has two concave portions 440
respectively concavely formed two side edges thereof. One step
surface is formed between each concave portion 440 and the
insulating surface 44.
[0007] Before memory card electrical connectors (please refer to
FIG. 2) come out, the memory card 4 is directly inserted into the
conventional USB connector 100 so that each first contacting points
450 of the first interface 45 of the memory card 4 is electrically
connected with the contacting portion 123 of each conductive
terminal 120 to form an electrical connection. However, because the
memory card 4 is too long and the protruding portion of the memory
card 4 which extends out of the connector 100 is too long, so the
memory card 4 is easy to swing and touch other objects so that the
memory card 4 and the USB connector 100 are damaged.
[0008] For solving the problem described above, an improved
electrical connector 200 (please refer to FIG. 4) comes out. Basing
on the conventional USB connector 100, the length of the base
portion 111 of the electrical connector 200 is increased and a slot
114 is concavely formed in the surface of the base portion 111
which extends to form the tongue plate 112. The bottom of the slot
114 and the side of the tongue plate 112 on which the terminal
passages 113 are extended generally lie in the same plane. Each
conductive terminal 120 has a front contacting portion 123 and a
rear contacting portion 124 respectively received in the portion of
a corresponding terminal passage 113 located on the tongue plate
112 and the portion of the corresponding terminal passage located
on the bottom of the slot 114. The improved electrical connector
200 can contact with the contacting points of the memory card 4 to
form the electrical connection when the memory card 4 is inserted
into the electrical connector 200 deeply. At this time, the
protruding portion of the memory card 4 which extends out of the
electrical connector 200 is very short, so the swing of the memory
card 4 can be avoided, and even if there is a little swing, the
memory card 4 isn't easy to touch other objects. However, when the
memory card 4 is inserted into the electrical connector 200, each
first contacting point 450 of the first interface 45 firstly
correspondingly contacts with the front contacting portion 123 of
each conductive terminal 120. Till the memory card 4 is inserted to
its position, each first contacting point 450 of the first
interface 45 securely contacts with the rear contacting portion 124
of each conductive terminal 120. So there firstly occurs short
conduction, then short non-conduction, and finally stable
electrical connection between the memory card 4 and the electrical
connector during the inserting of the memory card 4, which is easy
to cause that the system and the memory card are damaged.
Furthermore, there may be more than one interface on the surface of
the memory card 4, so after the memory card 4 is inserted to its
position, the front contacting portion 123 of the conductive
terminal 120 may contact with contacting points of other interfaces
on the surface of the memory card 4 (such as the second contacting
point 460 of the second interface 46). However, because the
interfaces of the memory card 4 operate at different voltages and
transmit different signals after being electrically connected, the
contact of the front contacting portion 123 of the conductive
terminal 120 and contacting points of other interfaces on the
surface of the memory card 4 will cause that non-specific
conduction occurs and signals are transmitted in disorder, thereby
damaging the system and the memory card.
[0009] Hence, there is a need for a new electrical connection and
inserting method thereof to solve the problems described above.
SUMMARY OF THE INVENTION
[0010] An object of the present invention is to provide an
electrical connector and inserting method thereof, wherein the
electrical connector can be not only connected with a socket
assembly (for example, a standard USB socket connector), but also
securely connected with a plug assembly (for example, a memory
card), and the electrical connector can stably transmit signals
when being connected with the plug assembly.
[0011] To achieve the above-mentioned object, an electrical
connector in accordance with the present invention is provided. The
electrical connector includes an insulating body having a main body
portion, wherein a first receiving space is concavely formed in the
main body portion and extends from a front end of the main body to
a rear end of the main body and the main body portion has a
plurality of spaced first terminal passages extending in a top
surface of the first receiving space; a second receiving space is
formed in the front end of the main body portion and connected with
the first receiving space; and a tongue plate extends forwards from
a front end face of the main body portion, the second receiving
space is located above the tongue plate, and the tongue plate has a
working surface in which a plurality of spaced second terminal
passages extends; a plurality of first conductive terminals which
is respectively correspondingly received in the first terminal
passages; and a plurality of second conductive terminals which is
respectively correspondingly received in the second terminal
passages.
[0012] Comparing with conventional electrical connectors, the
electrical connector of the present invention has the plurality of
spaced first terminal passages extending in the top surface of the
first receiving space. The tongue plate has a working surface and
the plurality of spaced second terminal passages extends in the
working surface. So the first terminal passages and the second
terminal passages are not in a same plane and are arranged back and
forth along the inserting direction. Also, since the plurality of
first conductive terminals is respectively correspondingly received
in the first terminal passages and the plurality of second
conductive terminals is respectively correspondingly received in
the second terminal passages, the first conductive terminals and
the second conductive terminals are not in a same plane and are
arranged back and forth along the inserting direction. When a
socket assembly (for example, a standard USB socket connector) is
inserted into the electrical connector, the socket assembly can be
electrical connected with the second conductive terminals; and when
a plug assembly (for example, memory card, Micard) is inserted into
the electrical connector, the surface of the memory card with
contacting points is electrically connected with the first
conductive terminals in the first receiving space and the surface
of the memory card without contacting points attaches to the bottom
surface of the first receiving space, so that the memory card is
only electrically connected with the first conductive terminals, so
there is no other in-series disturbed signal noise for stable
signal transmission. Furthermore, the memory card enters the second
receiving space 53 and the first receiving space 52 in turn when
being inserted, so the protruding portion of the memory card which
extends out of the electrical connector when the memory card is
inserted in its position is short, thereby the memory card cannot
swing and can be connected stably.
[0013] The present invention further provides an electrical
connector which includes a socket connector having a main body
portion, wherein an inserting space is concavely formed in the main
body portion and extends from a front end of the main body to a
rear end of the main body, and the main body portion has a
plurality of spaced first conductive terminals extending on a top
surface of the inserting space; and a plug connector extending from
the socket connector, wherein the plug connector has a tongue plate
extending forwards from a front end of a bottom of the main body
portion of the socket connector, and a plurality of spaced second
conductive terminals extends on a surface of the tongue plate;
whereby when an plug assembly is connected, the plug assembly goes
over the tongue plate of the plug connector and is just inserted in
the inserting space of the socket connector; and when a socket
assembly is connected, the socket assembly just covers the tongue
plate of the plug connector and is blocked outside the socket
connector.
[0014] Comparing with conventional electrical connectors, the
electrical connector of the present invention includes the socket
connector having the main body portion. The inserting space is
concavely formed in the main body portion and extends from a front
end of the main body to a rear end of the main body, and the main
body portion has the plurality of spaced first conductive terminals
extending on the top surface of the inserting space. When an plug
assembly (for example, memory card, Micard) is connected, the plug
assembly goes over the tongue plate of the plug connector and is
just inserted in the inserting space of the socket connected, so
that the plug assembly is only electrically connected with the
first conductive terminals inserted in the inserting space. So the
plug assembly is only electrically connected with the first
conductive terminals, thereby there is no other in-series disturbed
signal noise for stable signal transmission. Also, when the plug
assembly is inserted into the electrical connector, the plug
assembly goes over the tongue plate of the plug connector and is
just inserted in the inserting space of the socket connector, so
the plug assembly is positioned in the inserting space and above
the tongue plate, thereby the protruding portion of the plug
assembly which extends out of the electrical connector when the
plug assembly is inserted in its position is short, thereby the
plug assembly cannot swing and can be connected stably.
[0015] The present invention further provides an electrical
connector which includes a main body portion which has a receiving
space concavely formed in a front end thereof, a protrusion
extending forwards from the front end thereof and a cutout
concavely formed in a bottom thereof, wherein the protrusion has a
guiding surface formed on a top thereof and connected with a bottom
surface of the receiving space, and the cutout is connected with
the receiving space; a plurality of spaced first conductive
terminals disposed on a top surface of the receiving space and each
having a first connecting portion which is formed by extending each
first conductive terminal rearwards through a rear end of the main
body portion and then bending the first conductive terminal
downward; and a plurality of spaced second conductive terminals
disposed on the guiding surface of the protrusion and each having a
second connecting portion which is formed by bending and extending
the second conductive terminal downward when the second conductive
terminal is extended to the cutout.
[0016] Comparing with conventional electrical connectors, the
electrical connector of the present invention includes the main
body portion which has the receiving space concavely formed in the
front end thereof and the plurality of spaced first conductive
terminals disposed on the top surface of the receiving space. When
a plug assembly (for example, memory card, Micard) is inserted into
the electrical connector, the surface of the memory card with
contacting points is electrically connected with the first
conductive terminals located in the receiving space and the surface
of the memory card without contacting points attaches to the bottom
surface of the receiving space, so that the memory card is only
electrically connected with the first conductive terminals, so
there is no other in-series disturbed signal noise for stable
signal transmission. Furthermore, the main body portion has the
protrusion extending forwards from the front end thereof, and the
protrusion has the guiding surface formed on a top thereof and
connected with the bottom surface of the receiving space, so the
memory card enters the receiving space from the guiding surface
when being inserted, that is, the memory card can be received in
the longer inserting space which is formed by the space above the
guiding surface and the receiving space, so the protruding portion
of the memory card, which extends out of the electrical connector
when the memory card is inserted in its position, is short, thereby
the memory card cannot swing and can be connected stably.
Additionally, the plurality of spaced second conductive terminals
is disposed on the guiding surface of the protrusion, and when each
second conductive terminal is extended to the cutout, the second
conductive terminal is bent and extends downward to form the second
connecting portion. The second conductive terminal doesn't like
each first conductive terminal which is bent and extends downward
after extending rearwards through the rear end of the main body
portion. So the whole length of each second conductive terminal is
reduced, so that manufacturing materials are saved, production cost
is reduced, and signal transmission distance effectively decreases
and the resistance is reduced, which is favorable to high-frequency
transmission.
[0017] The present invention further provides a method of inserting
an electrical connector, and the method includes the steps of: (1).
providing an electrical connector which includes: a main body
portion having a receiving space which is concavely formed in the
main body portion and extends from a front end face of the main
body to a rear end face of the main body, and a tongue plate
extending forwards from a front end of a bottom of the main body
portion; a plurality of spaced first conductive terminals disposed
on a top surface of the receiving space; and a plurality of spaced
second conductive terminals disposed on an upper surface of the
tongue plate; (2). providing a memory card which has a first
insulating surface and a second insulating surface opposite to the
first insulating surface, wherein the first insulating surface has
a plurality of spaced contacting points; (3). disposing the memory
card in front of the electrical connector correspondingly, the
first insulating surface facing up and the opposite second
insulating surface facing down; and (4). pushing the memory card so
that the memory card goes over the tongue plate of the electrical
connector and enters the receiving space, each of the contacting
points of the first insulating surface is just correspondingly
electrically connected with one of the first conductive terminals,
and the second insulating surface contacts with the second
conductive terminals.
[0018] Comparing with conventional methods, the method of the
present invention includes: pushing the memory card so that the
memory card goes over the tongue plate of the electrical connector
and enters the receiving space, each of the contacting points of
the first insulating surface is just correspondingly electrically
connected with one of the first conductive terminals, and the
second insulating surface contacts with the second conductive
terminals. So the memory card is only electrically connected with
the first conductive terminals, thereby there is no other in-series
disturbed signal noise for stable signal transmission. Also, when
the memory card is inserted into the electrical connector, the
memory card goes over the tongue plate of the electrical connector
and enters the receiving space, so the memory card is received in
the inserting space which is formed by the space above the tongue
plate and the receiving space, so the protruding portion of the
memory card, which extends out of the electrical connector when the
memory card is inserted in its position, is short, thereby the
memory card cannot swing and can be connected stably.
BRIEF DESCRIPTION OF THE DRAWINGS
[0019] FIG. 1 is an assembled perspective view of a conventional
electrical connector connected with a socket assembly;
[0020] FIG. 2 is an assembled perspective view of the conventional
electrical connector connected with a plug assembly;
[0021] FIG. 3 is a perspective view of a plug assembly;
[0022] FIG. 4 is an assembled perspective view of an improved
electrical connector connected with a plug assembly;
[0023] FIG. 5 is an assembled perspective view of an electrical
connector according to the present invention connected with a plug
assembly;
[0024] FIG. 6 is a cross-sectional view taken along lines A-A in
FIG. 5;
[0025] FIG. 7 is an exploded perspective view of the electrical
connector and the plug assembly in FIG. 5;
[0026] FIG. 8 is a perspective view of an insulating body of the
electrical connector in FIG. 5, from another angle;
[0027] FIG. 9 is a partially cross-sectional view of the electrical
connector and the plug assembly in FIG. 5, from another angle;
[0028] FIG. 10 is a perspective view showing that conductive
terminals of the electrical connector in FIG. 5 are assembled on a
circuit board;
[0029] FIG. 11 is a top view showing that the conductive terminals
of the electrical connector in FIG. 5 are assembled on the circuit
board; and
[0030] FIG. 12 is a cross-sectional view of the electrical
connector according to the present invention connected with a
socket assembly.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0031] To further understand features and technical contents of the
present invention, please refer to the drawings and the following
detailed description related the electrical connector according to
the present invention.
[0032] Please refer to FIG. 5, FIG. 7 and FIG. 12, an electrical
connector 1 of the present invention may be mounted on a circuit
board 2 for being connected with a socket assembly (for example, a
standard USB socket connector) 3 or a plug assembly (for example,
memory card, Micard) 4. The electrical connector 1 includes an
insulating body 5, a plurality of conductive terminals 6 and a
shielding casing 7.
[0033] Please refer to FIGS. 5-8, the insulating body 5 includes a
main body portion 51. A first receiving space (inserting space) 52
is concavely formed in the main body portion 51 and extends from a
front end face of the main body to a rear end face of the main
body. A plurality of spaced first terminal passages 521 extends
between a top of the main body portion 51 and a top surface of the
first receiving space 52. At least one side of the first receiving
space 52 has a fool-proof unit 522 formed thereon. In the
embodiment, the fool-proof units 522 are protruding blocks 522
respectively disposed on two sides of the first receiving space 52
near a bottom surface of the first receiving space 52. One step
surface is formed between each protruding block 522 and the bottom
surface of the first receiving space 52. The second insulating
surface 44 of the memory card 4 has two concave portions 440
respectively concavely formed in two side edges thereof. The
protruding blocks 522 and the concave portions 440 engage with each
other to prevent the memory card 4 from being inserted by mistake.
That is, when the memory card 4 is inserted correctly, the
protruding blocks 522 are just locked in the concave portions 440
of the memory card 4 and perform a guiding function; and when the
memory card 4 is inserted by mistake, the protruding blocks 522
block the memory card 4 and prevent the memory card 4 from entering
the first receiving space 52 (simultaneously refer to FIG. 9). A
tongue plate (protrusion) 54 extends forwards from the front end
face of the main body portion 51. The main body portion 51 of the
insulating body 5 also has a second receiving space (containing
space) 53 in the front end thereof. The second receiving space 53
is located above the tongue plate 54 and connected with the first
receiving space 52. The tongue plate 54 has a working surface 541,
and in the embodiment, the working surface 541 is adjacent to the
second receiving space 53 on the tongue plate 54, that is, the
working surface 541 is the top surface of the tongue plate 54. At
this time, the working surface 541 also forms a guiding surface 541
which guides the memory card 4 to enter the first receiving space
52 when the memory card 4 can be just inserted into the electrical
connector 1. Of course, the present invention also can take a
surface of the tongue plate 54 far away from the second receiving
space 53 as the working surface depending on the situation. A
plurality of spaced second terminal passages 542 extends in the
working surface 541, and each first terminal passage 541 is
disposed corresponding to each second terminal passage 542. The
main body portion 51 has a cutout 551 concavely formed in the
bottom thereof, which is connected with the first receiving space
52, and a mounting surface 552 formed adjacent to the cutout 551.
The cutout 551 and the mounting surface 552 form a mounting portion
55.
[0034] Please refer to FIG. 6 and FIG. 7, the shielding casing 7
abuts against the front end of the main body portion 51 and
surrounds the tongue plate 54 and the second receiving space 53,
thereby forming a butting portion (inserting opening) 70 for being
inserted an external assembly into. The butting portion 70 includes
a butting space which is defined by the shielding casing 7 and the
tongue plate 54 together and contains the second receiving space
53. The shielding casing 7 includes a top plate 71, a bottom plate
72 and two side plates 73. The second receiving space 53 is defined
by the top plate 71 and the working surface 541 of the tongue plate
54. The shielding casing 7 has a plurality of elastic pieces 74
extending into the inserting opening 70 and welding pieces 75 bent
to extend outwards from the two side plates 73. The welding pieces
75 may be welded on corresponding welding points (not shown) on the
circuit board 2, thereby fixing the shielding casing 7 on the
circuit board 2.
[0035] Please refer to FIG. 7, FIG. 10 and FIG. 11, the conductive
terminals 6 include a plurality of first conductive terminals 61
and a plurality of second conductive terminals 62, wherein the
plurality of first conductive terminals 61 form a first conductive
terminal group and the plurality of second conductive terminals 62
form a second conductive terminal group. The first conductive
terminals 61 are correspondingly disposed in the first terminal
passages 521. Each first conductive terminal 61 has a first
contacting portion 611 extending forwards and a first connecting
portion 612 which is formed by extending the first conductive
terminal 61 rearwards through the rear end of the main body portion
51 and then bending the first conductive terminal 61 downward,
wherein the first connecting portion 612 and the first contacting
portion 611 are connected with and perpendicular to each other. The
second conductive terminals 62 have the similar structure to that
of the first conductive terminals 61. The second conductive
terminals 62 are correspondingly disposed in the second terminal
passages 542. Each second conductive terminal 62 has a second
contacting portion 621 extending forwards and a second connecting
portion 622 which is formed by bending and extending the second
conductive terminal 62 downward (that is, towards the circuit board
2) when the second conductive terminal 62 is extended to the cutout
551, wherein the second connecting portion 622 and the second
contacting portion 621 are connected with and perpendicular to each
other. That is, the second connecting portion 622 extends downward
vertically in the cutout 551. In the embodiment, when extending to
the cutout 551, each second conductive terminal 62 is bent and
extends downward. Each second conductive terminal 62 doesn't like
each first conductive terminal 61 which is bent and extends
downward after extending rearwards through the rear end of the main
body portion 51. So the whole length of each second conductive
terminal 62 is reduced, so that manufacturing materials are saved,
production cost is reduced, and signal transmission distance
effectively decreases and the resistance is reduced, which is
favorable to high-frequency transmission. Furthermore, in a
top-view direction, each first conductive terminal 61 and the
corresponding second conductive terminal 62 lie on a direct line
(such as center lines R1, R2, R3, R4 of the terminals which are
parallel to each other, as shown in FIG. 11). The first contacting
portion 611 of each first conductive terminal 61 and the second
contacting portion 621 of the corresponding second conductive
terminal 62 overlap, that is, the front end of the first contacting
portion 611 of each first conductive terminal 61 is located above
the rear end of the second contacting portion 621 of the
corresponding second conductive terminal 62. The structure features
and arrangement of the conductive terminals 6 can not only ensure
that the electrical connector 1 is effectively connected with the
conventional socket assembly (for example, standard USB socket
connector) 3, but also achieve the correct electrical connection of
the electrical connector 1 and the memory card 4 (pleaser refer to
FIG. 3, when an interface of the memory card 4, for example, the
first interface, is a USB interface, that is, the memory card 4 has
the first contacting points 450 as shown in FIG. 3, the electrical
connection of the memory card 4 and the standard USB plug connector
can be achieved), so the first contacting points 450 of the memory
card 4 needn't to be arranged extra. Of course, in other
embodiments, the conductive terminals 6 can have other structure
features and can be arranged in other ways depending on demands to
be suitable for the arrangement of the contacting points on the
memory card 4 and the socket assembly 3 which can engage with the
electrical connector 1, which is omitted herein.
[0036] Pleaser refer to FIG. 7, the circuit board 2 has a joint
opening 20, a plurality of spaced first pin holes 21 into which the
first connecting portions 612 of the first conductive terminals 61
are inserted correspondingly, a plurality of spaced second pin
holes 22 into which the second connecting portions 622 of the
second conductive terminals 62 are inserted correspondingly, and
two welding points (not shown) which are respectively welded on the
welding piece 75 of the shielding casing 7.
[0037] Please refer to FIG. 7, in assembly, firstly, the first
conductive terminals 61 and the second conductive terminals 62 are
respectively correspondingly received in the first terminal
passages 521 and the second terminal passages 542, and then the
shielding casing 7 abuts against the front end of the main body
portion 51 and surrounds the tongue plate 54 and the second
receiving space 53, thereby a complete electrical connector 1 is
assembled. Please refer to FIG. 6 simultaneously, when the
electrical connector 1 is assembled on the circuit board 2, the
first connecting portions 612 of the first conductive terminals 61
and the second connecting portions 622 of the second conductive
terminals 62 are respectively and correspondingly inserted and
welded in the first pin holes 21 and the second pin holes 22 in the
circuit board 2, the welding pieces 75 of the shielding casing 7
are correspondingly welded on the welding points of the circuit
board 2. At this time, the mounting portion 55 of the electrical
connector 1 just abuts against the circuit board 2, and the front
portion of the main body portion 51 of the insulating body 5 and
the shielding casing 7 of the electrical connector 1 pass through
the joint opening 20 of the circuit board 2, so that the electrical
connector 1 is locked in the joint opening 20.
[0038] Please refer to FIG. 6 and FIG. 7, during inserting of the
memory card 4, firstly, correspondingly dispose the memory card 4
in front of the electrical connector 1, wherein the first
insulating surface 43 faces up and the opposite second insulating
surface 44 faces down, that is, the first insulating surface (front
face) 43 faces to the top plate 71 of shielding casing 7 and the
second insulating surface (back face) 44 faces to the tongue plate
54. Then, push the memory card 4 so that the memory card 4 enters
the first receiving space 52 from the second receiving space 53
above the tongue plate 54 of the electrical connector 1, that is,
the memory card 4 passes through the second receiving space 53 and
the first receiving space 52 in turn, and the first contacting
points 450 of the first interface 45 of the first insulating
surface 43 of the memory card 4 are just respectively
correspondingly electrically connected with the first contacting
portions 611 of the conductive terminals 61, and the second
insulating surface 44 is adjacent to the bottom surface of the
first receiving space 52 and contacts with the second conductive
terminals 62. Accordingly, the memory card 4 is only electrically
connected the first contacting portions 611 of the first conductive
terminals 61 correspondingly, so there is no other in-series
disturbed signal noise for stable signal transmission.
Additionally, the memory card 4 is inserted in the longer inserting
space which is formed by the second receiving space 53 and the
first receiving space 52 together, so the protruding portion of the
memory card 4 which extends out of the electrical connector 1 is
short, thereby the memory card 4 cannot swing and can be connected
stably.
[0039] Consequently, the electrical connector 1 of the present
invention has the advantages as follows:
[0040] 1. In the present invention, the two protruding blocks 522
are respectively disposed on the two sides of the first receiving
space 52 near the bottom surface of the first receiving space 52,
respectively. One step surface is formed between each protruding
block 522 and the bottom surface of the first receiving space 52.
The second insulating surface 44 of the memory card 4 has two
concave portions 440 respectively concavely formed in the two side
edges thereof. The protruding blocks 522 and the concave portions
440 engage with each other to prevent the memory card 4 from being
inserted by mistake. That is, when the memory card 4 is inserted
correctly, the protruding blocks 522 are just locked in the concave
portions 440 of the memory card 4 and perform a guiding function;
and when the memory card 4 is inserted by mistake, the protruding
blocks 522 block the memory card 4 and prevent the memory card 4
from entering the first receiving space 52.
[0041] 2. In the present invention, when extending to the cutout
551, each second conductive terminal 62 is bent and extends
downward. Each second conductive terminal 62 doesn't like each
first conductive terminal 61 which is bent and extends downward
after extending rearwards through the rear end of the main body
portion 51. So the whole length of each second conductive terminal
62 is reduced, so that manufacturing materials are saved,
production cost is reduced, and signal transmission distance
effectively decreases and the resistance is reduced, which is
favorable to high-frequency transmission.
[0042] 3. In the present invention, in a top-view direction, each
first conductive terminal 61 and the corresponding second
conductive terminal 62 lie on a direct line (such as center lines
R1, R2, R3, R4 of the terminals which are parallel to each other,
as shown in FIG. 11). The first contacting portion 611 of each
first conductive terminal 61 and the second contacting portion 621
of the corresponding second conductive terminal 62 overlap, that
is, the front end of the first contacting portion 611 of each first
conductive terminal 61 is located above the rear end of the second
contacting portion 621 of the corresponding second conductive
terminal 62. The structure features and arrangement of the
conductive terminals 6 can not only ensure that the electrical
connector 1 is effectively connected with the conventional socket
assembly (for example, standard USB socket connector) 3, but also
achieve the correct electrical connection of the electrical
connector 1 and the memory card 4 (pleaser refer to FIG. 3, when an
interface of the memory card 4, for example, the first interface,
is a USB interface, that is, the memory card 4 has the first
contacting points 450 as shown in FIG. 3, the electrical connection
of the memory card 4 and the standard USB plug connector can be
achieved, so the first contacting points 450 of the memory card 4
don't need to be arranged extra.
[0043] 4. In the present invention, during inserting of the memory
card 4, firstly, correspondingly dispose the memory card 4 in front
of the electrical connector 1 and the first insulating surface 43
faces up and the opposite second insulating surface 44 faces down,
that is, the first insulating surface (front face) 43 faces to the
top plate 71 of the shielding casing 7 and the second insulating
surface (back face) 44 faces to the tongue plate 54. Then, push the
memory card 4 so that the memory card 4 enters the first receiving
space 52 from the second receiving space 53 above the tongue plate
54 of the electrical connector 1, that is, the memory card 4 passes
through the second receiving space 53 and the first receiving space
52 in turn, and the first contacting points 450 of the first
interface 45 of the first insulating surface 43 of the memory card
4 are just respectively correspondingly electrically connected with
the first contacting portions 611 of the conductive terminals 61,
and the second insulating surface 44 is adjacent to the bottom
surface of the first receiving space 52 and contacts with the
second conductive terminals 62. Accordingly, the memory card 4 is
only electrically connected with the first contacting portions 611
of the first conductive terminals 61 correspondingly, so there is
no other in-series disturbed signal noise for stable signal
transmission.
[0044] 5. In the present invention, the memory card 4 is inserted
in the longer inserting space which is formed by the second
receiving space 53 and the first receiving space 52 together, so
the protruding portion of the memory card 4, which extends out of
the electrical connector 1, is short, thereby the memory card 4
cannot swing and can be connected stably.
[0045] What are disclosed above are only the specification and the
drawings of the preferred embodiment of the present invention and
it is therefore not intended that the present invention be limited
to the particular embodiment disclosed. It will be understood by
those skilled in the art that various equivalent changes may be
made depending on the specification and the drawings of the present
invention without departing from the scope of the present
invention.
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